Notes

The Concept of Wave Explain the concept of a wave A wave is a disturbance that travels through a medium from one location to another location. Consider a slinky wave as an example of a wave. When the slinky is…

Electromotive force (emf) and potential difference (pd) The Concept of Electromotive Force (emf) and Potential Difference (PD) Explain the concept of electromotive force (emf) and potential difference (pd) Potential difference (P.d) is the difference in potential between two charged points…

Vapour The Process of Evaporation of Liquid Explain the process of evaporation of liquid Vapours Factors Affecting Evaporation of a Liquid Identify factors affecting evaporation of a liquid There are several factors which affect evaporation of liquids when heated which…

Heat Capacity Heat capacity is the amount of heat required to raise the temperature of an object or substance by one degree. The temperature change is the difference between the final temperature ( Tf) and the initial temperature ( Ti). The Factors which…

Conduction The Concept of Conduction of Heat Explain the concept of conduction of Heat Conduction is the transfer of heat energy through solids, for example, metals. Generally solid substances contain particles which are close together. Each particle vibrates at one position…

Thermal Energy The Concept of Heat Explain the concept of heat Heat – Is the transfer of energy due to temperature differences. Temperature – Is the degree of hotness or coldness of a body. Or heat is a form of…

Simple Microscope The Structure of the Simple Microscope Describe the structure of the simple microscope A magnifying glass, an ordinary double convex lens with a short focal length, is a simple microscope. The reading lens and hand lens are instruments…

Light is a form of energy which controls the sense of vision.

The Concept of Friction Explain the concept for friction Friction is the force which opposes (resists) motion of the body for example: If a block of wood is placed on a table it remains at rest Unless it is acted…

Scalar and Vector Quantities Difference between Scalar and Vector Quantities Distinguish between scalar and vector quantities Scalar Quantities These are physical quantities which have magnitude only. Examples of scalar quantities include mass, length, time, area, volume, density, distance, speed, electric…